fix(svc): authenticate to nats with the configured token (#2581)

fluxer_snowflakes/src/main.rs

@@ -14,7 +14,8 @@ use types::SERVICE_NAME;
 async fn main() -> anyhow::Result<()> {
     fluxer_svc::init_tracing();
     let config = ServiceConfig::from_env()?;
-    let transport = NatsTransport::connect(&config.nats_url).await?;
+    let transport =
+        NatsTransport::connect(&config.nats_url, config.nats_auth_token.as_deref()).await?;
     tracing::info!(
         service = SERVICE_NAME,
         mode = ?config.mode,